1.
Speed limits in Australia
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Speed limits in Australia range from 10 kilometres per hour shared zones to 110 kilometres per hour. In the Northern Territory four highways have 130 kilometres per hour zones, speed limit signage is in km/h since metrication on 1 July 1974. All speed limits are multiples of 10 km/h – the last digit in all speed signs is zero, Australian states and territories use two default speed limits. These apply automatically in the absence of posted speed restriction signage, school zones are variable speed zones, with a 40 kilometres per hour limit applying during gazetted school terms and at specific times of the day when children are expected to be present. In South Australia, the limit is 25 kilometres per hour, a minority of school zones have flashing lights to indicate when the lower speed limit applies. Common speed zones above the limits are, Many sub-arterial roads are zoned 60 kilometres per hour. Major connector roads and smaller highways are zoned 60 kilometres per hour,70 kilometres per hour,80 kilometres per hour or 90 kilometres per hour, some highways and freeways are zoned 110 kilometres per hour. Most of the Stuart, Arnhem, Barkly and Victoria highways in the Northern Territory are zoned 130 kilometres per hour and it contains the word END and a number in a black circle beneath this, representing the ceasing speed-limit. It is typically used where, according to AS1742 and it is intended therefore to invoke particular caution. This sign is used as a replacement for the slash-through speed derestriction signs common in Europe. Speed limits are enforced in almost all areas of the country except for areas of the Northern Territory. This was updated in 2006 to require that the speed indicated shall not be less than the speed of the vehicle. Detection measures used are radar, LIDAR, fixed and mobile speed cameras, Vascar, pacing, despite introduction of model national road rules by the states in 1999, Western Australia and the Northern Territory retain different default speed limits. The table below indicates the speed limits along with typical school zone limits. In the external territories, and in special cases, the speed limits may differ significantly from those found across the rest of the nation. Historically, Australia operated a simple speed limit system of urban and rural default limits, with the onset of metrication in 1974, speed limits and speed advisories were converted into kilometres per hour, rounded to the nearest 10 km/h, leading to small discrepancies in speed limits. The urban default, which prior to the 1930s was 30 miles per hour, applied to any built up area, usually defined by the presence of street lighting. This limit was increased to 35 miles per hour over the next 30 years by each of the states and territories

2.
Autobahn
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The Autobahn is the federal controlled-access highway system in Germany. The official German term is Bundesautobahn, which translates as federal motorway, the literal meaning of the word Bundesautobahn is Federal Auto Track. German autobahns have no federally mandated speed limit for some classes of vehicles, however limits are posted in areas that are urbanized, substandard, accident-prone, or under construction. On speed-unrestricted stretches, a speed limit of 130 kilometres per hour applies. A2008 estimate reported that 52% of the network had only the advisory speed limit, 15% had temporary speed limits due to weather or traffic conditions. Measurements from the German State of Brandenburg in 2006 showed average speeds of 142 km/h on a 6-lane section of autobahn in free-flowing conditions. Germanys autobahn network has a length of about 12,993 kilometres in 2016. Longer similar systems can be found in the United States and India, only federally built controlled-access highways with certain construction standards including at least two lanes per direction are called Bundesautobahn. They have their own, white-on-blue signs and numbering system, in the 1930s, when construction began on the system, the official name was Reichsautobahn. Various other controlled-access highways exist on the federal, state, district and these highways are considered autobahnähnlich and are sometimes colloquially called Gelbe Autobahn because most of them are Bundesstraßen with yellow signs. Some controlled-access highways are classified as Bundesautobahn in spite of not meeting the construction standard. Nearly all exits are to the right, in the postwar years, a thicker asphaltic concrete cross-section with full paved hard shoulders came into general use. The top design speed was approximately 160 km/h in flat country, a flat-country autobahn that was constructed to meet standards during the Nazi period, could support the speed of up to 150 km/h on curves. The current autobahn numbering system in use in Germany was introduced in 1974, all autobahns are named by using the capital letter A, which simply stands for Autobahn followed by a blank and a number. The main autobahns going all across Germany have a single digit number, shorter autobahns that are of regional importance have a double digit number. The first digit used is similar to the system above, depending on the region, east-west routes are always even-numbered, north-south routes are always odd-numbered. The north-south autobahns are generally numbered using odd numbers from west to east, that is to say, similarly, the east-west routes are numbered using even numbers from north to south. One project was the private initiative HaFraBa which planned a car only road crossing Germany from Hamburg in the North via central Frankfurt am Main to Basel in Switzerland

3.
National Speed Limits (Malaysia)
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Had Laju Kebangsaan is a set of speed limits applicable on Malaysian expressways, federal roads, state roads and municipal roads. The National Speed Limits was enforced on 1 February 1989 following the National Speed Limit Orders 1989, expressways,110 km/h by default, but may be reduced to 80 or 90 km/h at dangerous mountainous stretches, crosswind areas and urban areas with high traffic capacity. Federal roads,90 km/h by default,60 km/h in town area, State roads,90 km/h by default,60 km/h in town area. Special speed limits are applied to vehicles, and all heavy vehicles have speed limit stickers describing the allowed speed limits. However, many heavy vehicles especially express buses do not obey these speed limits, besides, cars with trailers apply the same speed limit as heavier vehicles. Starting from the 2006 Hari Raya Aidilfitri, the Malaysian Police began enforcing lower speed limits during festive seasons for all federal and state roads, from the default 90 km/h down to 80 km/h. Speeding over the speed limits can be fined up to RM300. Samy Vellu, stating that most drivers often drive 10 to 30 km/h faster than the speed limit on the expressways. Over the years, several attempts to set speed limit for the expressways were being made by certain quarter of the public. However, each attempt was successfully turn-down citing safety as one of the reason for the rejection. On the basis of fatality per 100 km length of road, Speed limit Speed limits by country Speed trap Malaysian Expressway System Malaysian Federal Roads System Malaysian State Roads system

4.
Road speed limits in the United Kingdom
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The speed limit in each location is indicated on a nearby traffic sign or by the presence of street lighting. Signs show speed limits in miles per hour or use the speed limit symbol. The speed limit is 70 mph on motorways,70 mph on dual carriageways,60 mph on single carriageways and 30 mph in areas with street lighting, Other classes of vehicles are subject to lower limits on some roads. Some vehicle categories have various lower maximum limits enforced by speed limiters, ever since they have been introduced, speed limits have been controversial. Default maximum speed limits apply to all roads where no specific lower numeric speed limit is already in force, the default speed limit is known as the national speed limit. The NSLs vary by type and for vehicle types. Some classes of vehicles are required to have speed limiters which enforce a maximum speed by physical means, older vehicles still in use do not have limiters fitted or have them set at a higher speeds. New vehicles should be fitted with limiters as follows, Buses and coaches, Speed limit road signs are used to inform road users where speed limits other than the applicable national speed limit apply. For some types of vehicles, on types of road. Variable speed limits are used on some major traffic roads and these can be changed in response to weather, traffic levels, time of day or for other reasons with the currently applicable speed limit is displayed using an electronic road sign. Variable speed limits were introduced on some congested major routes as an element of controlled motorway techniques to improve traffic flows for given prevailing conditions, part-time variable speed limits may also be used outside schools. Rarely, minimum speed limits are used, such as through the Mersey Tunnels, to free flow. Circular blue signs with white numbers indicate the start of these limits, according to the government, speed limits are used to help achieve appropriate traffic speeds for safety, and environmental and accessibility reasons. The Department for Transport state that speed limits play a role in the effective management of traffic speeds in relation to the safety of both drivers and all other road users. The 30 mph speed limit in built-up areas was introduced in 1930 in response to high casualty levels, the 70 mph limit on previously unrestricted roads was introduced in 1965 following a number of serious motorway accidents in fog earlier the same year. The report highlights that when two cars crash at 60 mph a driver there is a 90% chance of death which falls to 65% at 50 mph, while recommending 20 mph speed zones the committee noted that these zones should not rely on heavy-handed enforcement measures. In 2008 14% of collisions reported to the police had a speed related contributory factor reported rising to 24% for fatal accidents, exceeding the speed limit was reported as a contributory factor in 5% of collisions and 14% of fatal collisions. The highest number of road fatalities recorded in a year in GB was 9,196 in 1941

5.
Speed limits in the United States by jurisdiction
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Speed limits in the United States vary depending on jurisdiction, with 75 to 80 mph common in the Western United States and 65 to 70 mph common in the Eastern United States. States may also set speed limits for trucks and night travel along with minimum speed limits. The highest speed limit in the country is 85 mph, which is posted on a stretch of tollway in rural Texas. In Alabama, it is illegal to drive at a speed that is not reasonable and prudent for the current conditions, drivers must also not drive so slow that they impede the flow of traffic. The Minnesota Drive Expressway features a 60-mile-per-hour speed limit, engineering studies are needed to define which road segments to post a speed limit higher than 55 miles per hour. The speed limit when towing a mobile home is 45 miles per hour, the default speed limit outside of business or residential districts in Arizona is 65 miles per hour, within those districts the default speed limit is 25 miles per hour. The school zone speed limit is 15 miles per hour, while some may be 25 to 35 miles per hour, exceeding these limits only in the best of driving conditions is considered prima facie evidence of speeding. Altered speed limits are not prima facie, the maximum speed limit on Interstate Highways is 75 miles per hour. This limit may be applied outside of urbanized areas, where speeds of over 85 miles per hour on any highway is considered a criminal offense, however, Interstate 10 near the California border is reduced to 65 miles per hour. Some portions of Interstate 15 have the same due to sharp curves. There is an exception of urban highway in Casa Grande, with a limit of 75 miles per hour. Within business or residential districts, exceeding the limit by more than 20 miles per hour is considered criminal. Within urbanized areas,55 miles per hour speed limit citations are given for waste of a finite resource and this exception only applies within a 10-mile-per-hour threshold. As long as the speed not exceed 65 miles per hour. Non-passenger vehicles in excess of 13 short tons, or vehicles drawing a pole trailer weighing more than 3 short tons may not exceed 65 miles per hour unless signs are posted that allow such a speed. Yet this does not differ from the speed limit, and has the practical effect of requiring extra consideration for posting a standard speed limit sign in excess of 65 miles per hour. A non-numeric minimum speed limit is incorporated with the basic speed rule in Arizona, night speed limit signs are posted on some roads within Tucson city limits that do not have street lights. Examples, Fort Lowell Road from Oracle Road to Country Club Road, Urban districts by default are posted at 30 mph

6.
Speed limits in Canada
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Canadian speed limits have been posted in kilometres per hour since 1977. Before then, when Canada used Imperial units, speed limits were in miles per hour, statutory speed limits are default speed limits set by a statute in each province or territory. They apply on roads which do not have posted speed limits, posted speed limits may differ from the statutory speed limit as indicated by speed limit signs. In most provinces and territories, statutory speed limits are 50 km/h in urban areas,80 km/h in rural areas, there is not a statutory speed limit for grade-separated expressways, however the typical speed limit in most provinces is 100 km/h. Statutory speed limits for school zones tend to be 30 or 40 km/h in urban areas and 50 km/h in rural areas, where a dash is indicated, there is no statutory speed limit, speed limits must always be posted. Where N/A is indicated, there is no such roadway in the province or territory, in Ontario, speeding fines double in areas identified as Community Safety Zones. For a first conviction, they face an additional $2, 000-$10,000 fine and 6 demerit points, they may also face up to 6 months in jail and licence suspension of up to two years. For a second conviction within 10 years of the first conviction, in Ontario and Québec, trucks must be electronically limited to 105 km/h. Radar detectors in Canada are legal only in British Columbia, Alberta and they are illegal to use in the other provinces and all three territories. Quebec penalizes $500 for use of a detector, along with confiscation of the device. A speed limit sign reads MAXIMUM XX, such as MAXIMUM80 for 80 km/h, a minimum speed sign reads XX MINIMUM, such as 60 MINIMUM for 60 km/h. The report recommended increasing speed limits on multi-lane limited-access highways constructed to high standards from 110 km/h to 120 km/h. As described in that report, the Ministry is currently using. Technical Circular T-10/00 to assess speed limits, the practice considers the 85th percentile speed, road geometry, roadside development, and crash history. In July 2014, speed limits were adjusted on many of the highways, including some which were increased to 120 km/h. In Ontario, speed too fast is responsible for just 2. 1% of road fatalities, an Ontario-based group is lobbying to increase speed limits from 100 km/h to 130 km/h

7.
Speed limits in the United States
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Speed limits in the United States are set by each state or territory. Highway speed limits can range from a low of 35 mph to a rural high of 85 mph. Speed limits are posted in increments of five miles per hour. Some states have lower limits for trucks and at night, most speed limits are set by state or local statute, although each state allows various subdivisions to set a different, generally lower, limit. The highest speed limits are generally 70 mph on the West Coast and the eastern states, 75–80 mph in inland western states, along with Louisiana. Alaska, Connecticut, Delaware, Massachusetts, New Jersey, New York, Puerto Rico, Rhode Island, and Vermont have a limit of 65 mph. Washington, D. C. and the U. S. Virgin Islands have a speed limit of 55 mph, and Guam. Unusual for a state east of the Mississippi, much of I-95 in Maine north of Bangor allows up to 75 mph. Although Nevada law has allowed speed limits up to 80 mph since October 2015, no 80 mph limit had been posted in Nevada as of August 2016, and it stays pending. Portions of the Idaho, Montana, South Dakota, Texas, Utah, the highest posted speed limit in the entire country can be found in one single stretch of rural freeway in Texas, and it is 85 mph. For 13 years, federal law withheld Federal highway trust funds to states that had speed limits above 55 mph, from April 1987 through December 8,1995, an amended federal law disincentivized speed limits above 65 mph. This table contains the most usual posted daytime speed limits, in miles per hour, the values shown are not necessarily the fastest or slowest. They usually indicate, but not always, statutory speed limits, Some states and territories have lower truck speed limits applicable to heavy trucks. If present, they are only on freeways or other high-speed roadways. Nevada and Washington allow for speeds up to 80 and 75 miles per hour respectively, Mississippi allows speeds up to 80 mph on toll roads, but no such roads exist. Oklahoma removed the speed of 75 from its laws, though no road been posted higher than 75. Whether this reduced gasoline consumption is debated and the impact on safety is unclear, studies, the law was widely disregarded by motorists, even after the national maximum was increased to 65 miles per hour on certain roads in 1987 and 1988. In 1995, the law was repealed, returning the choice of speed limit to each state, in addition to the legally defined maximum speed, minimum speed limits may be applicable

8.
Speed limits in the Czech Republic
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On 29 January 1900, a government ordinance limited the speed of vehicles inside settlements to the velocity of a hand-cantering horse. In 1935, the limit inside settlements was set at 35 km/h. Vehicles with two or more trailers were limited to 35 km/h, while trucks and buses were limited to 50 km/h, however, public buses could ask for an exception. A law in 1950 limited the speed in fog to 25 km/h. A law in 1960 limited the speed inside settlements between 5 a. m. and 11 p. m. to 50 km/h, buses and trucks over 3,500 kg were limited to 80 km/h. Also, in 1966, motorcycles were limited to 80 km/h, long-distance buses were freed from limits. Towed automobiles were limited to 50 km/h, speed limits were abolished on motorways, even for trucks, in 1971. Furthermore, in 1975, all of the 50 km/h limits were increased to 60 km/h, the special limits for motorcycles, trucks and buses were repealed. The ordinance in 1979 was the first to limit speeds outside of settlements. Cars were limited to 90 km/h and 110 km/h on motorways, long-distance buses to 90 km/h, motorcycles and trucks under 6,000 kg to 80 km/h, trucks over 6000 kg, the limit of 60 km/h was kept for roads inside settlements. A limit of 90 km/h and 110 km/h on motorways was established in 1989 for vehicles under 3500 kg, furthermore, motorcycles were limited to 90 km/h and all other motor vehicles were limited to 80 km/h. The speed inside settlements was limited 60 km/h and 80 km/h on motorways, specially signed pedestrian zones and house zones was introduced with a 20 km/h limit. 223/1997 Sb. which took effect on October 1,1997, reduced the settlement limit to 50 km/h and increased the limit to 130 km/h. As of 2016 there is a difference between motorways and roads for motorcars and speed limits are set to 130 and 110 km/h respectively outside of a settlement where speed limit is set to 80 km/h. On regular roads speed limit is set to 90 km/h and settlement limit is 50 km/h, inside settlement zone marked by a special blue sign the speed limit is set to 20 km/h. 50 metres before level crossing with railway the speed is reduced to 30 km/h or 50 km/h in case of visible flashing of a white traffic light. There are special restrictions for certain kinds of vehicles, especially with weight over 3.5 t, the speed limit for towing with a rope or tow bar is 60 km/h. Speed limit when a car has chains on is 50 km/h, when traveling over a railroad crossing with white flashing lights, the speed limit is 50 km/h and if no lights are working then the speed limit is 30 km/h

9.
Speed limits in Sweden
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Sweden has speed limits ranging from 30 km/h to 120 km/h, where 30,40,50,60 and 70 km/h are used within towns and cities. Outside schools and hospitals the limit is often 30 km/h,70,80,90 and 100 km/h are mainly used outside built-up areas where the speed limit depends on the standard and safety of the road. The main reason for setting 100 km/h on these roads is because of their importance to the region. Earlier it was permitted to drive 110 km/h on these roads,110 km/h and 120 km/h are the main speed limits on motorways. 110 km/h is still the most common speed limit on motorways in Sweden, local exceptions to motorway speed limits may apply, mainly near cities and on inner-city motorways. One of the lowest speed limits on a Swedish inner-city motorway is 70 km/h and this has been set on E4 Essingeleden through Stockholm. This is an 8-lane motorway passing near central parts of the capital and it is also present through Gothenburg. However this speed limit applies on a short part of the motorways. The reason is the risk of jams. From about 1990 to 1995, Sweden lowered the limit on motorways in the large city provinces from 110 km/h to 90 km/h, the term large city province was defined as a province including one of the three large cities with suburbs. This meant that the west coast motorway E6 had a 90 km/h limit on its about 250 km of motorway and this reduced limit was later removed because it was neither popular nor well obeyed. The speed limits are signposted with signs with yellow background, there are no end of speed limit signs, in opposite to most other countries in Europe. All speed limits are signposted with the speed limit value